As you may know, Firefox 57 comes with a new user interface, known as "Photon". It is intended to provide a more modern, sleek feel that’s consistent across multiple platforms. It replaced the previous "Australis" UI and features new menus, a new customization pane and tabs without rounded corners. By default, Firefox comes without a title bar. This design solution is intended to save space at the top and give more room for opened web sites. It is possible to enable the title bar if you are not happy with the default look of the browser. Here is how.